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Título
Approximating the Temperature–Entropy Saturation Curve of ORC Working Fluids From the Ideal Gas Isobaric Heat Capacity
Autor(es)
Assunto
ORC working fluids
Temperature–entropy saturation curve
Saturation properties
Wet and dry fluids
Ideal-gas heat capacity
Clasificación UNESCO
2213 Termodinámica
Fecha de publicación
2019-08
Editor
MDPI
Citación
Energies 2019, 12, 3266; doi:10.3390/en12173266
Resumen
[EN]Recently, we proposed an approximate expression for the liquid–vapor saturation curves of pure fluids in a temperature–entropy diagram that requires the use of parameters related to the molar heat capacity along the vapor branch of the saturation curve. In the present work, we establish a connection between these parameters and the ideal-gas isobaric molar heat capacity.
The resulting new approximation yields good results for most working fluids in Organic Rankine Cycles, improving the previous approximation for very dry fluids. The ideal-gas isobaric molar heat capacity can be obtained from most Thermophysical Properties databases for a very large number of substances for which the present approximation scheme can be applied.
URI
DOI
10.3390/en12173266
Aparece en las colecciones
- GIOETFE. Artículos [53]